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Title: Physical & Chemistry Notes
Description: Tells you what are the physical properties & chemical properties
Description: Tells you what are the physical properties & chemical properties
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Science Notes on Physical and Chemical Properties
PHYSICAL PROPERTY
Definition:
A feature or characteristic of matter which can be observed without changing the identity of the
matter
Examples:
Color
Density
Conductivity –thermal and electrical
Smell
Malleability
Melting Point
Taste
Ductility
Boiling Point
Texture
Solubility
Magnetism
Malleability how well something can be flattened or stretched without breaking
Metals
tend to be malleable – example is gold and copper
Wood and glass are NOT malleable
Ductility the ability to be stretched into a wire
Solubility how well one material dissolves in another material
...
Temperature – as temperature increases so does the rate of dissolving
2
...
Surface Area smaller pieces/particles – dissolve faster that large pieces of material
4
...
Thermal Conductivity – how well heat travels through a substance
2
...
Flammability
– how well something reacts with oxygen to produce heat/flame
2
...
Main reaction with and acid results
in bubbling
...
Other Reactions
– include heat being released, bubbling, strong odor, smoke, flame, change of
color, etc
...
Non eactivity
R
– when something
fails to react…
exampleplatinum dropped in acid has no
…
reaction…nothing happens
...
The shape and size have changed, but its still
paper
● Example
– Change of state = physical change…add energy to ice and you get a liquid…add more
energy and you get a gas…all physical changes as it is still water
● Example
– Dissolving things is a physical change…salt in water will temporarily mix then separate
out if left standing…can be separated back into water and salt
CHEMICAL CHANGE
● A change that occurs materials or are broken into different materials
when
react
● In a chemical change the physical appearance changes and you have a different substance than what
you started out with
● BOTH physical and chemical properties may change
● Energy may be produced or absorbed
● Usually
chemical changes
cannot
be reversed unless you make another chemical change
Title: Physical & Chemistry Notes
Description: Tells you what are the physical properties & chemical properties
Description: Tells you what are the physical properties & chemical properties